Television transmitter



July 3, 1934.

l. KlTRosER TELEvIsIoN TRANSMITTER Filed April 6, `193,2

INVENTOR ATTORNEY Patented July 3, 1934 TELEVSION TRANSMITTER Isaac Kitroser, ?aris, France, assigner to Keller- Dorian Colorim Corporation, New York, N. Y., a corporation of Delaware Application pril 6, 1932, Serial No. 603,464

15 Claims.

The object of my invention is to provide a television transmitter which is very simple in construction and which, therefore, Will be free from disadvantages inherent in prior constructions.

The object of Amy invention is particularly to avoid the presence of unnecessary diaphragms, which cause diffraction effects, and to `avoid the presence of unnecessary objectives by using a minimum number of objectives in accomplishing the desired result. Further objects of my invention will Iappear from the -detaile the same hereinafter.

While my invention is capable d description of of embodiment in many different forms, for the purpose of illustration I lhave shovvn only certain forms of the same 'in the accompanying drawing, in

Which- Eig. 1 is `a .diagrammatic representation of an apparatus made in accordance with my invention; and

Fig. y2 is anelevation of the scanner used in the transmitting apparatus.

of the straight lament of .the lamp 1 in a sharp line on the lenticulated film 3, having the picture carried by a sensitive emulsion Liat the rear thereof `and having transverse cylindrical lenticles 5 at the front thereof. The film 3 of a gate Y6 having an opening 7 .passes in the rear through which the light rays may pass andthe iilm 3 is fed continuosly past the opening passing vthrough the lm 3,

7. The light, after is received by three lenses 8, 9 and 10, which are located in such a manner as -to correspond to the red, green and blue color areas of the color filter used in taking .the picture on the goifered iilm. 9 and 10 may be ordinary or ac and their -size is such as to .receiv the light which was directed from ,zones onto the iilm in taking the picture.

rThese lenses 8, hromatic lenses e the light from lm 3 in the same angular directions as the the three color Furthermore, these three objectives 8, 9 and 10 produce an image of the line of the lm being illuminated near the point where there is located a scanner 11 carried by a shaft 12 driven from an electric motor 13 and which is synchronized with the scanner of the receiving apparatus in any desired manner, the same, for eX application ofSamuel Bayard Col ample, as in the gate hereinafter referred to. The scanner 11 has a plurality of slits 14 which are radially arranged in a succession of groups of three, each group being comprised of slits 15, 16 and 1'7 which correspond to the lenses 8, 9 and 10 so as to transmit successively the impressions from the light rays corresponding to the said blue, green and red areas. These openings are made in the form of slits which travel across the illuminated line of the yiilm in a position in which the slit is at right angles to the lm. These slits can be made more accurately than When made in the form of round holes and there is less diffraction produced. Immediately beyond the scanning disk 11 there is located Aan objective 18, in the form `of a large eld-lens, which is in the focal plane of the lenses 8, 9 and 1.0 and which is adapted to concentrate the light on a photo-electric cell 19. The photo-electric cell 19 is constructed in any desired manner, like photo-electric cells such as are used vin television practice. The current therefrom passes by `Way of leads 20 vand 2l to one vor more vacuum tube ampliers 22 and thence to a standard radio transmitter 23 which is connected to an aerial 24and to a ground 25.

The receiving apparatus may be of any desired 4type but may be, for example, the same as the receiving apparatus .as set forth .in detail in the application of Samuel Bayard Colgate upon Television in colors, led December 26, 1931.

In the-operation of my apparatus the light proceeds from the linear `filament in the lamp 1 through the condenser 2, and is then concentrated inthe form of a line yparallel to .the gofferings of the film 3 carrying the cinematographic picture to be transmitted. The light therefrom is .projected onto three lenses 8, 9 and 10, which correspond in position to the three color Zones Aoi" the color filter used in taking the picture on the said Viilm. That is to say, for example, the light which passes through vthe lens 8 will correspond to the red, the light which passes through the lens 9 will correspond to the green and the light which passes through the lens 10 will correspond to the blue of said color lter. The line of the lm 3 illuminated at any given time is thus scanned in succession by the disk 11 so as to transmit through said disk 1l the red, `green and blue oi each portion of said line, the light being transmitted, accordingly, through the photoelectric cell 19 and thence to the aerial 24 from' which it may be received by any appropriate receiver, as, for example, the receiver described in detail in the application of Samuel Bayard Colgate above referred to. Inasmuch as the light at the film 3 is not controlled by the presence of an opening, and as the light passes through the disk ll through slits, and as no other diaphragms are present in the transmitter, there is practically no diffraction resulting in the transmission. Furthermore, it will be noted that the light is thrown directly from the lm 3 onto the three lenses 8, 9 and 10 provided for the light corresponding to the three different colors, Without passing through any intermediate objective. This conduces to the simplicity and general effectiveness of the apparatus.

While I have described my invention above in detail I Wish it to be understood that many changes may be made therein without departing from the spirit of the same.

I claim:

1. .A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a lenticulated nlm, a plurality of lenses for separately concentrating the light from the different color registration zones or the film, a scanner adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted from the different-color registration zones and means for producing radio waves therefrom.

2. A television transmitter adapted for transmitting cinematographic pictures in colors, comn prising means to concentrate light in the form of a line upon a constantly moving lenticulated nlm, a plurality of lenses for separately concentrating the light from the diierent color registration zones of the lm, a scanner adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted from the diierentcolor registration zones and means for producing radio waves therefrom.

3. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a lenticulated film, a plurality of lenses for separately concentrating the light from the different color registration zones of the iilm, a slitted scanning disk adapted to transmit the light from said lenses in succession, means com` prising a photo-electric cell adapted to receive the light transmitted from the different-color registration zones and means for producing radio Waves therefrom.

4. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a constantly moving lenticulated lm, a plurality of lenses for separately concentrating the light from the diiierent color registration zones of the iilm, a slitted scanning disk adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted from the different-color registration zones and means for producing radio Waves therefrom,

5. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a lenticulated iilm, a plurality of lenses for separately concentrating the light from the different color registration zones of the lm, a scanner adapted to transmit the light from said lenses in succession, means comprising a single photo-electric cell adapted to receive the light transmitted from the different-color registration zones and means for producing radio Waves therefrom.

6. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a constantly moving lenticulated film, a plurality of lenses for separately concentrating the light from the dilerent color registration Zones of the nlm, a scanner adapted to transmit the light from said lenses in succession, means com rising a single photo-electric cell adapted to receive the light transmitted from the different-color registration zones and means for producing radio Waves therefrom.

'7. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a lenticulated film, a plurality of lenses for separately concentrating the light from the different color registration zones of the nlm, a slitted scanning disk adapted to transmit the light from said lenses in succession, means coinprising a single photoelectric cell adapted to receive the light transmitted from the differentcolor registration zones and means for producing radio Waves therefrom.

8. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a constantly moving lenticulated nlm, a plurality of lenses for separately concentrating the light from the different color registration Zones of the nlm, a slitted scanning disk adapted to transmit the light from said lenses in succession, means comprising a single photo-electric cell adapted to receive the light transmitted from the diiTerent-color registration zones and means for producing radio Waves therefrom.

9. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a lenticulated film, a plurality of lenses for separately concentrating the light from the diierent color registration zones of the lrn, a scanner adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted and means for producing radio Waves therefrom, the apparatus being Without any objective between the ilm and said plurality of objectives.

10. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a constantly moving lenticulated film, a plurality of lenses for separately concentrating the light from the different color registration Zones of the film, a scanner adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted and means for producing radio Waves therefrom, the apparatus being Without any objective between the lm and said plurality of objectives.

11. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a lenticulated nlm, a plurality of lenses for separately concentrating the light from the different color registration Zones of the lm, a scanner adapted to transmit the light from said lenses in succession, means comprising a photoelectric cell adapted to receive the light transmitted from the different-color registration zones,

an objective for focusing the light on the said cell, and means for producing radio waves therefrom.

12. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a constantly moving lenticulated lm, a plurality of lenses for separately concentrating the light from the different color registration zones of the film, a scanner adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted from the differentcolor registration zones, an objective for focusing the light on the said cell, and means for producing radio Waves therefrom.

13. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a lenticulated film, a plurality of lenses for separately concentrating the light from the different color registration Zones of the film, a slitted scanning disk adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted from the diierentcolor registration zones, an objective for focusing the light on the said cell, and means for producing radio Waves therefrom.

14. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising means to concentrate light in the form of a line upon a constantly moving lenticulated film, a plurality of lenses for separately concentrating the light from the different color registration Zones of the film, a slitted scanning disk adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted from the different-color registration zones, an objective for focusing the light on the said cell, and means for producing radio Waves therefrom.

15. A television transmitter adapted for transmitting cinematographic pictures in colors, comprising a condenser lens adapted to concentrate light in the form of a line upon a lenticulated film without the aid of a diaphragm, a plurality of lense for separately concentrating the light from the differentcolor registration zones of the lm, a scanner adapted to transmit the light from said lenses in succession, means comprising a photo-electric cell adapted to receive the light transmitted and means for producing radio Waves therefrom, the apparatus being without any objective between the film and said plurality of objectives.

ISAAC KITROSER. 

